XSS in Haml
CVE-2017-1002201
In haml versions prior to version 5.0.0.beta.2, when using user input to perform tasks on the server, characters like < > " ' must be escaped properly. In this case, the ' character was missed. An attacker can manipulate the input to introduce additional attributes, potentially executing code.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.015 (73.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 73rd percentile — 73.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.015 · newest: 0.015 · change: 0.000
Affected products
- Haml
- Http://haml.info/ Haml — versions All versions prior to version 5.0.0.beta.2
- Debian Linux — versions 8.0, 9.0
Weakness classification (CWE)
References
- github.com/haml/haml/commit/18576ae6e9bdcb4303fdbe6b3199869d289d67c2 (Patch, Third Party Advisory)
- snyk.io/vuln/SNYK-RUBY-HAML-20362 (Exploit, Patch, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2019/11/msg00007.html (mailing-list, Mailing List, Third Party Advisory)
- security.gentoo.org/glsa/202007-27 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2021/12/msg00028.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-1002201?
- CVE-2017-1002201 is a medium-severity vulnerability in Haml, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2019-10-15.
- How severe is CVE-2017-1002201?
- Medium severity. CVSS v3 base score is 6.1 out of 10.